CVE-2024-44983

netfilter: flowtable: validate vlan header

HIGH

7.1

CVSS Score

Published: September 4, 2024 at 07:54 PM UTC

Updated: June 17, 2026 at 07:53 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.1

Exploit prediction

EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: validate vlan header Ensure there is sufficient room to access the protocol field of the VLAN header, validate it once before the flowtable lookup. ===================================================== BUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x45a/0x5f0 net/netfilter/nf_flow_table_inet.c:32 nf_flow_offload_inet_hook+0x45a/0x5f0 net/netfilter/nf_flow_table_inet.c:32 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626 nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline] nf_ingress net/core/dev.c:5440 [inline]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.13 ≤ v < 5.15.1665.13 ≤ v < 6.1.1075.13 ≤ v < 6.10.75.13 ≤ v < 6.115.13 ≤ v < 6.6.485.16 ≤ v < 6.1.1076.2 ≤ v < 6.6.486.7 ≤ v < 6.10.74cd91f7c290f64fe430867ddbae10bff34657b6a6.11 rc1 6.11 rc2 6.11 rc3 6.11 rc4

Vendor states this is fixed in 0279c35d242d037abeb73d60d06a6d1bb7f672d9 (fixed)

Vendor states this is fixed in 043a18bb6cf16adaa2f8642acfde6e8956a9caaa (fixed)

Vendor states this is fixed in 6ea14ccb60c8ab829349979b22b58a941ec4a3ee (fixed)

Vendor states this is fixed in c05155cc455785916164aa5e1b4605a2ae946537 (fixed)

Vendor states this is fixed in d9384ae7aec46036d248d1c2c2757e471ab486c3 (fixed)

Vendor states this is fixed in 5.13 (unaffected)

Vendor states this is fixed in 5.15.166 (unaffected)

Vendor states this is fixed in 6.1.107 (unaffected)

Vendor states this is fixed in 6.10.7 (unaffected)

Vendor states this is fixed in 6.11 (unaffected)

Vendor states this is fixed in 6.6.48 (unaffected)