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CVE

CVE-2026-74394

RDMA/srpt: fix integer overflow in immediate data length check
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CVE

CVE-2026-74394

RDMA/srpt: fix integer overflow in immediate data length check

In the Linux kernel, the following vulnerability has been resolved:

RDMA/srpt: fix integer overflow in immediate data length check

immbuf->len is a user-controlled uint32t received from the network.

Adding it to immdataoffset without overflow checking allows a

malicious initiator to send len=0xFFFFFFFF, causing req_size to wrap

around to a small value, bypassing the bounds check, and subsequently

passing a ~4GB length to sginitone().

Use checkaddoverflow() to detect wrapping before the comparison.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/067b9556eeb007f28b7c2033b4dcde5b6d88418f, https://git.kernel.org/stable/c/07dec3f6dcb6c6cc891162d252b800eb0e6d5e8e, https://git.kernel.org/stable/c/3efa5301137140a3ca3677a9098c0a93a0acfd49, https://git.kernel.org/stable/c/65572fbd86033ae2370125593d59b8be34253aaf, https://git.kernel.org/stable/c/72497172a4799119a0282a5eb5e2b8ddcc821921, https://git.kernel.org/stable/c/c82c860f8c8e4f4f454c9f14d0ad0c0466965f7d, https://git.kernel.org/stable/c/dcf7a986f377cce0749ed53f1d64195fbd5fdf91, https://git.kernel.org/stable/c/eb4ecdf631fe00e8020bf461503cb9b7017ed796, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74394.json, https://nvd.nist.gov/vuln/detail/CVE-2026-74394, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.0054%
EPSS Percentile
0.43102%
Introduced Version
5dabcd0456d7ee17c2c7a17d7c2305444d2b9639,5.0.0,5.11.0,5.16.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
eb4ecdf631fe00e8020bf461503cb9b7017ed796,5.10.261,5.15.212,6.1.178,6.6.145,6.12.97,6.18.40,7.1.5,6.1.180-1,5.10.262-1,6.12.100-1

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