Critical severity · published Jul 1, 2026
CVE-2026-53355
net: rds: clear i_sends on setup unwind
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
net: rds: clear i_sends on setup unwind
The RDS IB connection teardown path is written so it can run during
partial startup and on repeated shutdown attempts. It uses NULL
pointers to distinguish resources that are still owned from resources
that have already been released.
When rds_ib_setup_qp() fails after allocating i_sends but before
allocating i_recvs, the sends_out path frees i_sends without clearing
the pointer. A later shutdown pass can still treat that stale pointer
as a live send ring allocation.
Clear i_sends after vfree() in the error unwind path so the existing
shutdown logic continues to use the correct ownership state.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
3.18.74 before 3.19; 4.1.46 before 4.2; 4.4.91 before 4.5; 4.9.54 before 4.10; 4.11.1 before 5.10.259; 5.11 before 5.15.210; +18 more · source: NVD
LI
Linux · Linux
3b12f73a5c2977153f28a224392fd4729b50d1dc before 66cccec111421a10efdc2c74499d15b93e7acae5; 3b12f73a5c2977153f28a224392fd4729b50d1dc before 2c5e5e4a5970c41f16e3ad801a78719ed5d5c71b; 3b12f73a5c2977153f28a224392fd4729b50d1dc before 29d940026dce39e3018dab6f67c9427249321270; 3b12f73a5c2977153f28a224392fd4729b50d1dc before e7cf30aa5f1fc6c2a86df65df8b731df20e44d79; 3b12f73a5c2977153f28a224392fd4729b50d1dc before f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30a; 3b12f73a5c2977153f28a224392fd4729b50d1dc before 1d4ec754ee3871f7e3670c67bb0298c9c5760926; +11 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53355
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-53355
Patch
https://git.kernel.org/stable/c/1d4ec754ee3871f7e3670c67bb0298c9c5760926
Patch
https://git.kernel.org/stable/c/20cf0fb715c41111469577e85e35d15f099473e0
Patch
https://git.kernel.org/stable/c/27040bbca289a704eafcacca167d310c6ce2b1bc
Patch
https://git.kernel.org/stable/c/29d940026dce39e3018dab6f67c9427249321270
Patch
https://git.kernel.org/stable/c/2c5e5e4a5970c41f16e3ad801a78719ed5d5c71b
Patch
https://git.kernel.org/stable/c/66cccec111421a10efdc2c74499d15b93e7acae5
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