CVE-2024-50132 (GCVE-0-2024-50132)
Vulnerability from cvelistv5
Published
2024-11-05 17:10
Modified
2025-10-01 20:27
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing/probes: Fix MAX_TRACE_ARGS limit handling When creating a trace_probe we would set nr_args prior to truncating the arguments to MAX_TRACE_ARGS. However, we would only initialize arguments up to the limit. This caused invalid memory access when attempting to set up probes with more than 128 fetchargs. BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 UID: 0 PID: 1769 Comm: cat Not tainted 6.11.0-rc7+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014 RIP: 0010:__set_print_fmt+0x134/0x330 Resolve the issue by applying the MAX_TRACE_ARGS limit earlier. Return an error when there are too many arguments instead of silently truncating.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/08ccd1a57c4d3882e9a877eb2dcc66e50a3b0279Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6bc24db74fe4788cc7c2f30a113fc6aafba225a3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/73f35080477e893aa6f4c8d388352b871b288fbcPatch
Impacted products
Vendor Product Version
Linux Linux Version: e96b42d22f66982b84e31b6935a59d74d9a2d848
Version: 035ba76014c096316fa809a46ce0a1b9af1cde0d
Version: 035ba76014c096316fa809a46ce0a1b9af1cde0d
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   Linux Linux Version: 6.9
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