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Vulnerabilities

Vulnerability · CVE-2024-40942

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects The hwmp code use objects of type mesh_pr…

Published Jul 12, 2024 · catalog updated Oct 15, 2026 · linux kernel

Check if you run it

No confirmed exploitation is on record for CVE-2024-40942. EPSS is 0.28%. Act only if a listed version of linux kernel is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.28%
Remediation
Advisory link
Affected products
cpe linux/linux kernel

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects The hwmp code use objects of type mesh_preq_queue, added to a list in ieee80211_if_mesh, to keep track of mpath we need to resolve. If the mpath gets deleted, ex mesh interface is removed, the entries in that list will never get cleaned. Fix this by flushing all corresponding items of the preq_queue in mesh_path_flush_pending(). This should take care of KASAN reports like this: unreferenced object 0xffff00000668d800 (size 128): comm "kworker/u8:4", pid 67, jiffies 4295419552 (age 1836.444s) hex dump (first 32 bytes): 00 1f 05 09 00 00 ff ff 00 d5 68 06 00 00 ff ff ..........h..... 8e 97 ea eb 3e b8 01 00 00 00 00 00 00 00 00 00 ....>........... backtrace: [ ] __kmem_cache_alloc_node+0x1e0/0x35c [ ] kmalloc_trace+0x34/0x80 [ ] mesh_queue_preq+0x44/0x2a8 [ ] mesh_nexthop_resolve+0x198/0x19c [ ] ieee80211_xmit+0x1d0/0x1f4 [ ] __ieee80211_subif_start_xmit+0x30c/0x764 [ ] ieee80211_subif_start_xmit+0x9c/0x7a4 [ ] dev_hard_start_xmit+0x174/0x440 [ ] __dev_queue_xmit+0xe24/0x111c [ ] batadv_send_skb_packet+0x180/0x1e4 [ ] batadv_v_elp_periodic_work+0x2f4/0x508 [ ] process_one_work+0x4b8/0xa1c [ ] worker_thread+0x9c/0x634 [ ] kthread+0x1bc/0x1c4 [ ] ret_from_fork+0x10/0x20 unreferenced object 0xffff000009051f00 (size 128): comm "kworker/u8:4", pid 67, jiffies 4295419553 (age 1836.440s) hex dump (first 32 bytes): 90 d6 92 0d 00 00 ff ff 00 d8 68 06 00 00 ff ff ..........h..... 36 27 92 e4 02 e0 01 00 00 58 79 06 00 00 ff ff 6'.......Xy..... backtrace: [ ] __kmem_cache_alloc_node+0x1e0/0x35c [ ] kmalloc_trace+0x34/0x80 [ ] mesh_queue_preq+0x44/0x2a8 [ ] mesh_nexthop_resolve+0x198/0x19c [ ] ieee80211_xmit+0x1d0/0x1f4 [ ] __ieee80211_subif_start_xmit+0x30c/0x764 [ ] ieee80211_subif_start_xmit+0x9c/0x7a4 [ ] dev_hard_start_xmit+0x174/0x440 [ ] __dev_queue_xmit+0xe24/0x111c [ ] batadv_send_skb_packet+0x180/0x1e4 [ ] batadv_v_elp_periodic_work+0x2f4/0x508 [

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linux/linux kernel6.10

How to fix CVE-2024-40942

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2024-40942. EPSS is 0.28%. Act only if a listed version of linux kernel is installed.

Which versions are affected?

Compare what you have installed with linux/linux kernel 6.10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-401: Missing Release of Memory after Effective Lifetime. EPSS 0.28%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 12, 2024 · NIST NVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects The hwmp code use objects of type mesh_preq_queue, added to a list in ieee80211_if_mesh, to keep track of mpath we need to resolve. If the mpath gets deleted, ex mesh interface is removed, the entries in that list will never get cleaned. Fix this by flushing all correspondi

  2. Oct 15, 2026 · NIST NVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects The hwmp code use objects of type mesh_preq_queue, added to a list in ieee80211_if_mesh, to keep track of mpath we need to resolve. If the mpath gets deleted, ex mesh interface is removed, the entries in that list will never get cleaned. Fix this by flushing all correspondi

Sources

  • CVE.orgVulnerability recordCVE-2024-40942

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-40942

    30-day exploitation probability 0.28%

    first.org
  • NIST NVDVulnerability recordCVE-2024-40942

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects The hwmp code use objects of type mesh_preq_queue, added to a list in ieee80211_if_mesh, to keep track of mpath we need to resolve. If the mpath gets de

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.