wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects
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: [<000000007302a0b6>] __kmem_cache_alloc_node+0x1e0/0x35c [<00000000049bd418>] kmalloc_trace+0x34/0x80 [<0000000000d792bb>] mesh_queue_preq+0x44/0x2a8 [<00000000c99c3696>] mesh_nexthop_resolve+0x198/0x19c [<00000000926bf598>] ieee80211_xmit+0x1d0/0x1f4 [<00000000fc8c2284>] __ieee80211_subif_start_xmit+0x30c/0x764 [<000000005926ee38>] ieee80211_subif_start_xmit+0x9c/0x7a4 [<000000004c86e916>] dev_hard_start_xmit+0x174/0x440 [<0000000023495647>] __dev_queue_xmit+0xe24/0x111c [<00000000cfe9ca78>] batadv_send_skb_packet+0x180/0x1e4 [<000000007bacc5d5>] batadv_v_elp_periodic_work+0x2f4/0x508 [<00000000adc3cd94>] process_one_work+0x4b8/0xa1c [<00000000b36425d1>] worker_thread+0x9c/0x634 [<0000000005852dd5>]
CVE-2024-40942
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-40942
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "377dbb220edc8421b7960691876c5b3bef62f89b",
"versionType": "git"
},
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "ec79670eae430b3ffb7e0a6417ad7657728b8f95",
"versionType": "git"
},
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "7518e20a189f8659b8b83969db4d33a4068fcfc3",
"versionType": "git"
},
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "c4c865f971fd4a255208f57ef04d814c2ae9e0dc",
"versionType": "git"
},
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "617dadbfb2d3e152c5753e28356d189c9d6f33c0",
"versionType": "git"
},
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "63d5f89bb5664d60edbf8cf0df911aaae8ed96a4",
"versionType": "git"
},
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "d81e244af521de63ad2883e17571b789c39b6549",
"versionType": "git"
},
{
"status": "affected",
"version": "050ac52cbe1f3de2fb0d06f02c7919ae1f691c9e",
"lessThan": "b7d7f11a291830fdf69d3301075dd0fb347ced84",
"versionType": "git"
}
],
"programFiles": [
"net/mac80211/mesh_pathtbl.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.26"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.26",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.317",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.279",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.221",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.162",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.95",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.35",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.9.6",
"versionType": "semver",
"lessThanOrEqual": "6.9.*"
},
{
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/mac80211/mesh_pathtbl.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-40942
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26642 · Revision 1
- Added to Heist Feed
- Publisher date