PT-2026-54823 · Linux · Linux Kernel

Published 2026-07-01 · Updated 2026-07-02 · CVE-2026-53355

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the RDS IB connection teardown path, which is designed to operate during partial startup and repeated shutdown attempts by using NULL pointers to track resource ownership. When the rds ib setup qp() function fails after allocating i sends but before allocating i recvs, the sends out path frees i sends without clearing the pointer. This results in a stale pointer that subsequent shutdown passes may incorrectly treat as a live send ring allocation.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2026-53355

ECHO-80A4-A304-35CE

Affected Products

Linux Kernel

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53355.json · Exploit
• https://ubuntu.com/security/CVE-2026-53355 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-53355 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-53355 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-53355 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-53355 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-53355 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-53355 · Security Note
• https://osv.dev/vulnerability/CVE-2026-53355 · Vendor Advisory
• https://git.kernel.org/stable/c/e7cf30aa5f1fc6c2a86df65df8b731df20e44d79 · Note
• https://git.kernel.org/stable/c/66cccec111421a10efdc2c74499d15b93e7acae5 · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-53355 · Note
• https://git.kernel.org/stable/c/f16ad421a4e3e7db2d14bdf3b16f583bc4f3b30a · Note
• https://git.kernel.org/stable/c/27040bbca289a704eafcacca167d310c6ce2b1bc · Note
• https://git.kernel.org/stable/c/20cf0fb715c41111469577e85e35d15f099473e0 · Note