Double Free in net/packet/af_packet.c leading to priviledge escalation
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- Fix
- Fixed in 5.4.168, 5.10.88, 5.15.11, 5.16-rc6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The Linux kernel's packet socket code (net/packet/af_packet.c) is affected. A local user who makes crafted system calls could trigger a double free that may allow them to gain elevated privileges or crash the system.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
Affected versions
- Linux Kernel Kernel
From unspecified · fixed in 5.4.168; From unspecified · fixed in 5.10.88; From unspecified · fixed in 5.15.11; From unspecified · fixed in 5.16-rc6