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CVE-2024-36016 is an out-of-bounds write vulnerability in the Linux kernel's tty n_gsm line discipline. The issue occurs in gsm0_receive() due to stale state across reconfiguration between basic option mode and advanced option mode. In the described scenario, one side configures n_gsm in basic option mode, the peer sends a basic-mode frame header with data length 1, the local side switches to advanced option mode, and the peer then sends additional data bytes that exceed gsm->len because gsm->len is not used in advanced mode. If the local side then switches back to basic option mode, neither gsm->state nor gsm->len has been reset after reconfiguration, allowing continued input processing until gsm0_receive() writes past gsm->buf. The fix changes the gsm->count versus gsm->len comparison from equality to a less-than check and adds upper-bound validation against MAX_MRU in both gsm0_receive() and gsm1_receive() to harden against corruption of gsm->len and gsm->mru.
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8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Potential out-of-bounds vulnerability in the Linux kernel TTY n_gsm gsm0_receive() function.
Possible out-of-bounds access in the Linux n_gsm TTY line discipline receive handler.
Linux kernel n_gsm out-of-bounds vulnerability in gsm0_receive().
Linux kernel TTY GSM line-discipline out-of-bounds flaw fixed in the updated image.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.