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CVE-2023-53716

net: fix skb leak in __skb_tstamp_tx()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.3, 4.14.316, 4.19.284, 5.4.244, 5.10.181, and 3 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: net: fix skb leak in __skb_tstamp_tx() Commit 50749f2dd685 ("tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.") added a call to skb_orphan_frags_rx() to fix leaks with zerocopy skbs. But it ended up adding a leak of its own. When skb_orphan_frags_rx() fails, the function just returns, leaking the skb it just cloned. Free it before returning. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 6.2.15 · fixed in 6.3

  • Linux Linux

    From 4.14.315 · fixed in 4.14.316; From 4.19.283 · fixed in 4.19.284; From 5.4.243 · fixed in 5.4.244; From 5.10.180 · fixed in 5.10.181; From 5.15.111 · fixed in 5.15.114; From 6.1.28 · fixed in 6.1.31; From 6.3.2 · fixed in 6.3.5

References 8

git.kernel.org