ghsa-rjw2-5698-2f3h
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix mr->map double free
rxe_mr_cleanup() which tries to free mr->map again will be called when rxe_mr_init_user() fails:
CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x45/0x5d panic+0x19e/0x349 end_report.part.0+0x54/0x7c kasan_report.cold+0xa/0xf rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe] __rxe_cleanup+0x10a/0x1e0 [rdma_rxe] rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe] ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs] ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs] ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs]
This issue was firstly exposed since commit b18c7da63fcb ("RDMA/rxe: Fix memory leak in error path code") and then we fixed it in commit 8ff5f5d9d8cf ("RDMA/rxe: Prevent double freeing rxe_map_set()") but this fix was reverted together at last by commit 1e75550648da (Revert "RDMA/rxe: Create duplicate mapping tables for FMRs")
Simply let rxe_mr_cleanup() always handle freeing the mr->map once it is successfully allocated.
{
"affected": [],
"aliases": [
"CVE-2022-50543"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-07T16:15:38Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix mr-\u003emap double free\n\nrxe_mr_cleanup() which tries to free mr-\u003emap again will be called when\nrxe_mr_init_user() fails:\n\n CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n Call Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x45/0x5d\n panic+0x19e/0x349\n end_report.part.0+0x54/0x7c\n kasan_report.cold+0xa/0xf\n rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe]\n __rxe_cleanup+0x10a/0x1e0 [rdma_rxe]\n rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe]\n ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs]\n ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs]\n ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs]\n\nThis issue was firstly exposed since commit b18c7da63fcb (\"RDMA/rxe: Fix\nmemory leak in error path code\") and then we fixed it in commit\n8ff5f5d9d8cf (\"RDMA/rxe: Prevent double freeing rxe_map_set()\") but this\nfix was reverted together at last by commit 1e75550648da (Revert\n\"RDMA/rxe: Create duplicate mapping tables for FMRs\")\n\nSimply let rxe_mr_cleanup() always handle freeing the mr-\u003emap once it is\nsuccessfully allocated.",
"id": "GHSA-rjw2-5698-2f3h",
"modified": "2025-10-07T18:31:09Z",
"published": "2025-10-07T18:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50543"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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