CVE-2024-26838 (GCVE-0-2024-26838)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:10 – Updated: 2026-08-05 11:27
VLAI
Title
RDMA/irdma: Fix KASAN issue with tasklet
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix KASAN issue with tasklet KASAN testing revealed the following issue assocated with freeing an IRQ. [50006.466686] Call Trace: [50006.466691] <IRQ> [50006.489538] dump_stack+0x5c/0x80 [50006.493475] print_address_description.constprop.6+0x1a/0x150 [50006.499872] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.505742] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.511644] kasan_report.cold.11+0x7f/0x118 [50006.516572] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.522473] irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.528232] irdma_process_ceq+0xb2/0x400 [irdma] [50006.533601] ? irdma_hw_flush_wqes_callback+0x370/0x370 [irdma] [50006.540298] irdma_ceq_dpc+0x44/0x100 [irdma] [50006.545306] tasklet_action_common.isra.14+0x148/0x2c0 [50006.551096] __do_softirq+0x1d0/0xaf8 [50006.555396] irq_exit_rcu+0x219/0x260 [50006.559670] irq_exit+0xa/0x20 [50006.563320] smp_apic_timer_interrupt+0x1bf/0x690 [50006.568645] apic_timer_interrupt+0xf/0x20 [50006.573341] </IRQ> The issue is that a tasklet could be pending on another core racing the delete of the irq. Fix by insuring any scheduled tasklet is killed after deleting the irq.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-10 14:27 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 44d9e52977a1b90b0db1c7f8b197c218e9226520 , < 635d79aa477f9912e602feb5498bdd51fb9cb824 (git)
Affected: 44d9e52977a1b90b0db1c7f8b197c218e9226520 , < b2e4a5266e3d133b4c7f0e43bf40d13ce14fd1aa (git)
Affected: 44d9e52977a1b90b0db1c7f8b197c218e9226520 , < c6f1ca235f68b22b3e691b2ea87ac285e5946848 (git)
Affected: 44d9e52977a1b90b0db1c7f8b197c218e9226520 , < 0ae8ad0013978f7471f22bcf45b027393e87f5dc (git)
Affected: 44d9e52977a1b90b0db1c7f8b197c218e9226520 , < bd97cea7b18a0a553773af806dfbfac27a7c4acb (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.150 , ≤ 5.15.* (semver)
Unaffected: 6.1.80 , ≤ 6.1.* (semver)
Unaffected: 6.6.19 , ≤ 6.6.* (semver)
Unaffected: 6.7.7 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix KASAN issue with tasklet\n\nKASAN testing revealed the following issue assocated with freeing an IRQ.\n\n[50006.466686] Call Trace:\n[50006.466691]  \u003cIRQ\u003e\n[50006.489538]  dump_stack+0x5c/0x80\n[50006.493475]  print_address_description.constprop.6+0x1a/0x150\n[50006.499872]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.505742]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.511644]  kasan_report.cold.11+0x7f/0x118\n[50006.516572]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.522473]  irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.528232]  irdma_process_ceq+0xb2/0x400 [irdma]\n[50006.533601]  ? irdma_hw_flush_wqes_callback+0x370/0x370 [irdma]\n[50006.540298]  irdma_ceq_dpc+0x44/0x100 [irdma]\n[50006.545306]  tasklet_action_common.isra.14+0x148/0x2c0\n[50006.551096]  __do_softirq+0x1d0/0xaf8\n[50006.555396]  irq_exit_rcu+0x219/0x260\n[50006.559670]  irq_exit+0xa/0x20\n[50006.563320]  smp_apic_timer_interrupt+0x1bf/0x690\n[50006.568645]  apic_timer_interrupt+0xf/0x20\n[50006.573341]  \u003c/IRQ\u003e\n\nThe issue is that a tasklet could be pending on another core racing\nthe delete of the irq.\n\nFix by insuring any scheduled tasklet is killed after deleting the\nirq."
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              "value": "AV:L - The vulnerable window is opened by irdma/ice device teardown or PF reset and is exercised through local RDMA verbs access (/dev/infiniband/uverbs*) driving CEQ completion interrupts; no remote packet parsing reaches the free path.\nAC:L - The attacker controls both sides of the race \u2014 a sustained stream of RDMA completions keeps a CEQ tasklet pending on some CPU at essentially all times, so any teardown/reset deterministically lands in the window, and the freed kmalloc\u0027d irdma_ceq object is readily reclaimed by ordinary heap spray.\nPR:L - An unprivileged local user holding an RDMA context can drive the CEQ interrupt storm and provoke the PE/HMC critical-error path in irdma_iidc_event_handler() that self-requests a PF reset (main.c:119-145), tearing the device down without root; no capability in the init namespace is needed for the verbs path.\nUI:N - The teardown can be initiated by the attacker-provoked CRIT_ERR/PFR reset path rather than requiring an administrator to unload the module, so no action by another user is needed.\nS:U - The use-after-free and any resulting corruption are confined to the kernel\u0027s own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The stale tasklet reads freed DMA and slab memory (iwceq-\u003erf, ceq ring, CEQE payloads) and, once reclaimed, the attacker-shaped object yields dereferences of arbitrary kernel addresses, enabling disclosure of kernel memory well beyond a bounded leak.\nI:H - irdma_sc_cq_ack() performs writel(cq-\u003ecq_uk.cq_id, cq-\u003ecq_uk.cq_ack_db) using two fields from the freed/reclaimed object \u2014 an arbitrary 32-bit write \u2014 and irdma_iwarp_ce_handler() makes an indirect call through cq-\u003eback_cq-\u003eibcq.comp_handler, giving control-flow hijack.\nA:H - Even unweaponized, the tasklet dereferences freed memory and treats garbage as a struct irdma_sc_cq pointer, producing an immediate oops/panic in softirq context (as shown by the KASAN splat) and taking the machine down."
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    "state": "PUBLISHED"
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    "epss": {
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      "date": "2026-09-24",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix KASAN issue with tasklet\n\nKASAN testing revealed the following issue assocated with freeing an IRQ.\n\n[50006.466686] Call Trace:\n[50006.466691]  \u003cIRQ\u003e\n[50006.489538]  dump_stack+0x5c/0x80\n[50006.493475]  print_address_description.constprop.6+0x1a/0x150\n[50006.499872]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.505742]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.511644]  kasan_report.cold.11+0x7f/0x118\n[50006.516572]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.522473]  irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.528232]  irdma_process_ceq+0xb2/0x400 [irdma]\n[50006.533601]  ? irdma_hw_flush_wqes_callback+0x370/0x370 [irdma]\n[50006.540298]  irdma_ceq_dpc+0x44/0x100 [irdma]\n[50006.545306]  tasklet_action_common.isra.14+0x148/0x2c0\n[50006.551096]  __do_softirq+0x1d0/0xaf8\n[50006.555396]  irq_exit_rcu+0x219/0x260\n[50006.559670]  irq_exit+0xa/0x20\n[50006.563320]  smp_apic_timer_interrupt+0x1bf/0x690\n[50006.568645]  apic_timer_interrupt+0xf/0x20\n[50006.573341]  \u003c/IRQ\u003e\n\nThe issue is that a tasklet could be pending on another core racing\nthe delete of the irq.\n\nFix by insuring any scheduled tasklet is killed after deleting the\nirq."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: RDMA/irdma: solucione el problema de KASAN con el tasklet Las pruebas de KASAN revelaron el siguiente problema asociado con la liberaci\u00f3n de una IRQ. [50006.466686] Seguimiento de llamadas: [50006.466691]  [50006.489538] dump_stack+0x5c/0x80 [50006.493475] print_address_description.constprop.6+0x1a/0x150 [50006.499872] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.505742] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.511644] kasan_report.cold.11+0x7f/0x118 [50006.516572] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.522473] irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.528232] irdma_process_ceq+0xb2/0x400 [irdma] [50006.536.53601 irdma_hw_flush_wqes_callback+0x370/0x370 [irdma] [50006.540298] irdma_ceq_dpc+0x44/0x100 [irdma] [50006.545306] tasklet_action_common.isra.14+0x148/0x2c0 [50006.551096 ] __do_softirq+0x1d0/0xaf8 [50006.555396] irq_exit_rcu+0x219/0x260 [50006.559670] irq_exit+0xa/0x20 [50006.563320] smp_apic_timer_interrupt+0x1bf/0x690 [50006.568645] apic_timer_interrupt+0xf/0x20 [50006.573341]  El problema es que un tasklet podr\u00eda estar pendiente en otro n\u00facleo acelerando la eliminaci\u00f3n del irq. Soluci\u00f3n asegur\u00e1ndose de que cualquier tasklet programado se elimine despu\u00e9s de eliminar el irq."
        }
      ],
      "id": "CVE-2024-26838",
      "lastModified": "2024-11-21T09:03:10.853",
      "published": "2024-04-17T10:15:09.810",
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            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: RDMA/irdma: solucione el problema de KASAN con el tasklet Las pruebas de KASAN revelaron el siguiente problema asociado con la liberaci\u00f3n de una IRQ. [50006.466686] Seguimiento de llamadas: [50006.466691]  [50006.489538] dump_stack+0x5c/0x80 [50006.493475] print_address_description.constprop.6+0x1a/0x150 [50006.499872] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.505742] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.511644] kasan_report.cold.11+0x7f/0x118 [50006.516572] ? irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.522473] irdma_sc_process_ceq+0x483/0x790 [irdma] [50006.528232] irdma_process_ceq+0xb2/0x400 [irdma] [50006.536.53601 irdma_hw_flush_wqes_callback+0x370/0x370 [irdma] [50006.540298] irdma_ceq_dpc+0x44/0x100 [irdma] [50006.545306] tasklet_action_common.isra.14+0x148/0x2c0 [50006.551096 ] __do_softirq+0x1d0/0xaf8 [50006.555396] irq_exit_rcu+0x219/0x260 [50006.559670] irq_exit+0xa/0x20 [50006.563320] smp_apic_timer_interrupt+0x1bf/0x690 [50006.568645] apic_timer_interrupt+0xf/0x20 [50006.573341]  El problema es que un tasklet podr\u00eda estar pendiente en otro n\u00facleo acelerando la eliminaci\u00f3n del irq. Soluci\u00f3n asegur\u00e1ndose de que cualquier tasklet programado se elimine despu\u00e9s de eliminar el irq."
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix KASAN issue with tasklet\n\nKASAN testing revealed the following issue assocated with freeing an IRQ.\n\n[50006.466686] Call Trace:\n[50006.466691]  \u003cIRQ\u003e\n[50006.489538]  dump_stack+0x5c/0x80\n[50006.493475]  print_address_description.constprop.6+0x1a/0x150\n[50006.499872]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.505742]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.511644]  kasan_report.cold.11+0x7f/0x118\n[50006.516572]  ? irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.522473]  irdma_sc_process_ceq+0x483/0x790 [irdma]\n[50006.528232]  irdma_process_ceq+0xb2/0x400 [irdma]\n[50006.533601]  ? irdma_hw_flush_wqes_callback+0x370/0x370 [irdma]\n[50006.540298]  irdma_ceq_dpc+0x44/0x100 [irdma]\n[50006.545306]  tasklet_action_common.isra.14+0x148/0x2c0\n[50006.551096]  __do_softirq+0x1d0/0xaf8\n[50006.555396]  irq_exit_rcu+0x219/0x260\n[50006.559670]  irq_exit+0xa/0x20\n[50006.563320]  smp_apic_timer_interrupt+0x1bf/0x690\n[50006.568645]  apic_timer_interrupt+0xf/0x20\n[50006.573341]  \u003c/IRQ\u003e\n\nThe issue is that a tasklet could be pending on another core racing\nthe delete of the irq.\n\nFix by insuring any scheduled tasklet is killed after deleting the\nirq."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The vulnerable window is opened by irdma/ice device teardown or PF reset and is exercised through local RDMA verbs access (/dev/infiniband/uverbs*) driving CEQ completion interrupts; no remote packet parsing reaches the free path.\nAC:L - The attacker controls both sides of the race \u2014 a sustained stream of RDMA completions keeps a CEQ tasklet pending on some CPU at essentially all times, so any teardown/reset deterministically lands in the window, and the freed kmalloc\u0027d irdma_ceq object is readily reclaimed by ordinary heap spray.\nPR:L - An unprivileged local user holding an RDMA context can drive the CEQ interrupt storm and provoke the PE/HMC critical-error path in irdma_iidc_event_handler() that self-requests a PF reset (main.c:119-145), tearing the device down without root; no capability in the init namespace is needed for the verbs path.\nUI:N - The teardown can be initiated by the attacker-provoked CRIT_ERR/PFR reset path rather than requiring an administrator to unload the module, so no action by another user is needed.\nS:U - The use-after-free and any resulting corruption are confined to the kernel\u0027s own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The stale tasklet reads freed DMA and slab memory (iwceq-\u003erf, ceq ring, CEQE payloads) and, once reclaimed, the attacker-shaped object yields dereferences of arbitrary kernel addresses, enabling disclosure of kernel memory well beyond a bounded leak.\nI:H - irdma_sc_cq_ack() performs writel(cq-\u003ecq_uk.cq_id, cq-\u003ecq_uk.cq_ack_db) using two fields from the freed/reclaimed object \u2014 an arbitrary 32-bit write \u2014 and irdma_iwarp_ce_handler() makes an indirect call through cq-\u003eback_cq-\u003eibcq.comp_handler, giving control-flow hijack.\nA:H - Even unweaponized, the tasklet dereferences freed memory and treats garbage as a struct irdma_sc_cq pointer, producing an immediate oops/panic in softirq context (as shown by the KASAN splat) and taking the machine down."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:27:44.934Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/635d79aa477f9912e602feb5498bdd51fb9cb824"
            },
            {
              "url": "https://git.kernel.org/stable/c/b2e4a5266e3d133b4c7f0e43bf40d13ce14fd1aa"
            },
            {
              "url": "https://git.kernel.org/stable/c/c6f1ca235f68b22b3e691b2ea87ac285e5946848"
            },
            {
              "url": "https://git.kernel.org/stable/c/0ae8ad0013978f7471f22bcf45b027393e87f5dc"
            },
            {
              "url": "https://git.kernel.org/stable/c/bd97cea7b18a0a553773af806dfbfac27a7c4acb"
            }
          ],
          "title": "RDMA/irdma: Fix KASAN issue with tasklet",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-26838",
        "datePublished": "2024-04-17T10:10:04.871Z",
        "dateReserved": "2024-02-19T14:20:24.182Z",
        "dateUpdated": "2026-08-05T11:27:44.934Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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