RDMA/rxe: Fix OOB in free_rd_atomic_resources()
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix OOB in free_rd_atomic_resources() free_rd_atomic_resources() iterates using qp->attr.max_dest_rd_atomic. Updating max_dest_rd_atomic before freeing the old array can make the free path walk past the old allocation and trigger a slab out-of-bounds write catched by KASAN: ================================================================== BUG: KASAN: slab-out-of-bounds in free_rd_atomic_resource drivers/infiniband/sw/rxe/rxe_qp.c:180 [inline] BUG: KASAN: slab-out-of-bounds in free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:171 [inline] BUG: KASAN: slab-out-of-bounds in free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:163 [inline] BUG: KASAN: slab-out-of-bounds in rxe_qp_from_attr+0x1e88/0x2150 drivers/infiniband/sw/rxe/rxe_qp.c:712 Write of size 4 at addr ffff88802b8dddb8 by task syz.3.451/11063 CPU: 0 UID: 0 PID: 11063 Comm: syz.3.451 Not tainted 7.1.0 #2 PREEMPT(full) Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x10e/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xf7/0x600 mm/kasan/report.c:482 kasan_report+0xe4/0x120 mm/kasan/report.c:595 free_rd_atomic_resource drivers/infiniband/sw/rxe/rxe_qp.c:180 [inline] free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:171 [inline] fre
CVE-2026-80863
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80863
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "142c8165b7974b40fa62c393653edb5c00b8b5fe",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "30b90b55201902b2b8edcdbe2315ccd4c7547002",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "9b7d66ea88ae9395e42766b94a5c717b158b940a",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "f5e6580a3a16a83c743ad5a7c16922854a0d8b71",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "bc6e943794515d2a8417b02597a27bd377468d04",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "bdf5deccfbf9f556a08d1d2ef52e9e48f969e53e",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "4e5f753e8c280278c09f68fe728abf846e2bdfc1",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "d219e7a8eed3802970c3e4d243d79c70ef0a31bf",
"versionType": "git"
},
{
"status": "affected",
"version": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f",
"lessThan": "de329533792a373186d79dca1ca120f8fa0afd05",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_qp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.269",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.220",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.187",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.156",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.108",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.49",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.13",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2.3",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/sw/rxe/rxe_qp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80863
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34877 · Revision 1
- Added to Heist Feed
- Publisher date