CVE-2026-45852 (GCVE-0-2026-45852)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:15 – Updated: 2026-07-01 12:04
VLAI
Title
RDMA/rxe: Fix double free in rxe_srq_from_init
Summary
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix double free in rxe_srq_from_init
In rxe_srq_from_init(), the queue pointer 'q' is assigned to
'srq->rq.queue' before copying the SRQ number to user space.
If copy_to_user() fails, the function calls rxe_queue_cleanup()
to free the queue, but leaves the now-invalid pointer in
'srq->rq.queue'.
The caller of rxe_srq_from_init() (rxe_create_srq) eventually
calls rxe_srq_cleanup() upon receiving the error, which triggers
a second rxe_queue_cleanup() on the same memory, leading to a
double free.
The call trace looks like this:
kmem_cache_free+0x.../0x...
rxe_queue_cleanup+0x1a/0x30 [rdma_rxe]
rxe_srq_cleanup+0x42/0x60 [rdma_rxe]
rxe_elem_release+0x31/0x70 [rdma_rxe]
rxe_create_srq+0x12b/0x1a0 [rdma_rxe]
ib_create_srq_user+0x9a/0x150 [ib_core]
Fix this by moving 'srq->rq.queue = q' after copy_to_user.
Severity
Assigner
References
16 references
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < b98ab5494dbd48652561aa0b9c32f10500220745
(git)
Affected: aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < d493e0bfc748a520c349d6c8791b262aa5ad2e4e (git) Affected: aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < 9abff51163aa1bc275ec356f74fe976291860a7f (git) Affected: aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < 26793db60925df1e88a29466813d586cbc190b8c (git) Affected: aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < ce6f8e007682f378279d4cf83b240f12d52c723b (git) Affected: aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < 5c07aef09a121a4cd622a71eb0753a9e135c84a8 (git) Affected: aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < 26a9cfe12f4ffdeaa136f252478986fa5f397ddc (git) Affected: aae0484e15f062ad2c2502e68e15dfb8b8f84608 , < 0beefd0e15d962f497aad750b2d5e9c3570b66d1 (git) Affected: 350703fae672d4d649c3562c199eab5ec9dc7c79 (git) Affected: 4.19.86 , < 4.20 (semver) |
|
| Linux | Linux |
Affected:
4.20
Unaffected: 0 , < 4.20 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
|
| Red Hat | Red Hat Enterprise Linux AppStream E4S (v.9.4) |
cpe:/a:redhat:rhel_e4s:9.4::appstream |
|
| Red Hat | Red Hat Enterprise Linux AppStream (v. 9) |
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 8) |
cpe:/o:redhat:enterprise_linux:8::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS AUS (v.8.6) |
cpe:/o:redhat:rhel_aus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) |
cpe:/o:redhat:rhel_eus_long_life:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS E4S (v.9.4) |
cpe:/o:redhat:rhel_e4s:9.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux BaseOS (v. 9) |
cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux CRB (v. 8) |
cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) |
cpe:/a:redhat:enterprise_linux:9::crb |
|
| Red Hat | Red Hat Enterprise Linux NFV (v. 8) |
cpe:/a:redhat:enterprise_linux:8::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) |
cpe:/a:redhat:rhel_e4s:9.4::nfv |
|
| Red Hat | Red Hat Enterprise Linux Real Time for NFV (v. 9) |
cpe:/a:redhat:enterprise_linux:9::nfv |
|
| Red Hat | Red Hat Enterprise Linux RT (v. 8) |
cpe:/a:redhat:enterprise_linux:8::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time E4S (v.9.4) |
cpe:/a:redhat:rhel_e4s:9.4::realtime |
|
| Red Hat | Red Hat Enterprise Linux Real Time (v. 9) |
cpe:/a:redhat:enterprise_linux:9::realtime |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
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"url": "https://git.kernel.org/stable/c/0beefd0e15d962f497aad750b2d5e9c3570b66d1"
}
],
"title": "RDMA/rxe: Fix double free in rxe_srq_from_init",
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}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-45852",
"datePublished": "2026-05-27T12:15:26.084Z",
"dateReserved": "2026-05-13T15:03:33.079Z",
"dateUpdated": "2026-07-01T12:04:48.305Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-45852",
"date": "2026-07-01",
"epss": "0.00175",
"percentile": "0.07158"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-45852\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-27T14:16:57.193\",\"lastModified\":\"2026-07-01T13:17:33.270\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRDMA/rxe: Fix double free in rxe_srq_from_init\\n\\nIn rxe_srq_from_init(), the queue pointer \u0027q\u0027 is assigned to\\n\u0027srq-\u003erq.queue\u0027 before copying the SRQ number to user space.\\nIf copy_to_user() fails, the function calls rxe_queue_cleanup()\\nto free the queue, but leaves the now-invalid pointer in\\n\u0027srq-\u003erq.queue\u0027.\\n\\nThe caller of rxe_srq_from_init() (rxe_create_srq) eventually\\ncalls rxe_srq_cleanup() upon receiving the error, which triggers\\na second rxe_queue_cleanup() on the same memory, leading to a\\ndouble free.\\n\\nThe call trace looks like this:\\n kmem_cache_free+0x.../0x...\\n rxe_queue_cleanup+0x1a/0x30 [rdma_rxe]\\n rxe_srq_cleanup+0x42/0x60 [rdma_rxe]\\n rxe_elem_release+0x31/0x70 [rdma_rxe]\\n rxe_create_srq+0x12b/0x1a0 [rdma_rxe]\\n ib_create_srq_user+0x9a/0x150 [ib_core]\\n\\nFix this by moving \u0027srq-\u003erq.queue = q\u0027 after copy_to_user.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/infiniband/sw/rxe/rxe_srq.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"b98ab5494dbd48652561aa0b9c32f10500220745\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"d493e0bfc748a520c349d6c8791b262aa5ad2e4e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"9abff51163aa1bc275ec356f74fe976291860a7f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"26793db60925df1e88a29466813d586cbc190b8c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"ce6f8e007682f378279d4cf83b240f12d52c723b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"5c07aef09a121a4cd622a71eb0753a9e135c84a8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"26a9cfe12f4ffdeaa136f252478986fa5f397ddc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\"lessThan\":\"0beefd0e15d962f497aad750b2d5e9c3570b66d1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"350703fae672d4d649c3562c199eab5ec9dc7c79\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4.19.86\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/infiniband/sw/rxe/rxe_srq.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.20\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.259\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.210\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.176\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.128\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.75\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.14\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.4\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"affectedData\":[{\"vendor\":\"Red 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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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