High severity · published May 27, 2026
CVE-2026-46102
net: strparser: fix skb_head leak in strp_abort_strp()
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
net: strparser: fix skb_head leak in strp_abort_strp()
When the stream parser is aborted, for example after a message assembly timeout,
it can still hold a reference to a partially assembled message in
strp->skb_head.
That skb is not released in strp_abort_strp(), which leaks the partially
assembled message and can be triggered repeatedly to exhaust memory.
Fix this by freeing strp->skb_head and resetting the parser state in the
abort path. Leave strp_stop() unchanged so final cleanup still happens in
strp_done() after the work and timer have been synchronized.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
4.9 before 5.10.258; 5.11 before 5.15.209; 5.16 before 6.1.175; 6.2 before 6.6.140; 6.7 before 6.12.86; 6.13 before 6.18.27; +1 more · source: NVD
LI
Linux · Linux
43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a before d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3; 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a before a470ed71c906cc8cbad0d74c9942216698911f8b; 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a before c2e57695ec9ff9d42f23de70f3805199153d007b; 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a before e9ae00490d474757c0f9c65073de83e6bb1e5a00; 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a before 5327dad2ffe9c1b49881dd6d51ff3c6893847568; 43a0c6751a322847cb6fa0ab8cbf77a1d08bfc0a before 19ca9475f18f991735f98a22e735c43e95e6298d; +3 more · source: vendor
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46102
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46102
Patch
https://git.kernel.org/stable/c/19ca9475f18f991735f98a22e735c43e95e6298d
Patch
https://git.kernel.org/stable/c/5327dad2ffe9c1b49881dd6d51ff3c6893847568
Patch
https://git.kernel.org/stable/c/56082f442023db9be1a5a29d4ee361de4017c0b7
Patch
https://git.kernel.org/stable/c/a470ed71c906cc8cbad0d74c9942216698911f8b
Patch
https://git.kernel.org/stable/c/c2e57695ec9ff9d42f23de70f3805199153d007b
Patch
https://git.kernel.org/stable/c/d6668ce0e78d23eabecef9a6bc4f0f739cb28ad3
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