AI Score
Confidence
Low
EPSS
Percentile
13.0%
SSVC
Exploitation
none
Automatable
no
Technical Impact
partial
In the Linux kernel, the following vulnerability has been resolved:
net: ipv4: fix memory leak in netlbl_cipsov4_add_std
Reported by syzkaller:
BUG: memory leak
unreferenced object 0xffff888105df7000 (size 64):
comm “syz-executor842”, pid 360, jiffies 4294824824 (age 22.546s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
backtrace:
[<00000000e67ed558>] kmalloc include/linux/slab.h:590 [inline]
[<00000000e67ed558>] kzalloc include/linux/slab.h:720 [inline]
[<00000000e67ed558>] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline]
[<00000000e67ed558>] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416
[<0000000006040154>] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739
[<00000000204d7a1c>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
[<00000000204d7a1c>] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800
[<00000000c0d6a995>] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504
[<00000000d78b9d2c>] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
[<000000009733081b>] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
[<000000009733081b>] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340
[<00000000d5fd43b8>] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929
[<000000000a2d1e40>] sock_sendmsg_nosec net/socket.c:654 [inline]
[<000000000a2d1e40>] sock_sendmsg+0x139/0x170 net/socket.c:674
[<00000000321d1969>] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350
[<00000000964e16bc>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404
[<000000001615e288>] __sys_sendmsg+0xd3/0x190 net/socket.c:2433
[<000000004ee8b6a5>] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:47
[<00000000171c7cee>] entry_SYSCALL_64_after_hwframe+0x44/0xae
The memory of doi_def->map.std pointing is allocated in
netlbl_cipsov4_add_std, but no place has freed it. It should be
freed in cipso_v4_doi_free which frees the cipso DOI resource.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "212166510582",
"versionType": "git"
},
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "086e92b1d68c",
"versionType": "git"
},
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "6dcea66d3bb5",
"versionType": "git"
},
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "5340858147e3",
"versionType": "git"
},
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "398a24447eb6",
"versionType": "git"
},
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "deeeb65c6ee4",
"versionType": "git"
},
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "0ffb460be3ab",
"versionType": "git"
},
{
"status": "affected",
"version": "96cb8e3313c7",
"lessThan": "d612c3f3fae2",
"versionType": "git"
}
],
"programFiles": [
"net/ipv4/cipso_ipv4.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.19",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "4.4.274",
"versionType": "custom",
"lessThanOrEqual": "4.4.*"
},
{
"status": "unaffected",
"version": "4.9.274",
"versionType": "custom",
"lessThanOrEqual": "4.9.*"
},
{
"status": "unaffected",
"version": "4.14.238",
"versionType": "custom",
"lessThanOrEqual": "4.14.*"
},
{
"status": "unaffected",
"version": "4.19.196",
"versionType": "custom",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.128",
"versionType": "custom",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.46",
"versionType": "custom",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.12.13",
"versionType": "custom",
"lessThanOrEqual": "5.12.*"
},
{
"status": "unaffected",
"version": "5.13",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv4/cipso_ipv4.c"
],
"defaultStatus": "affected"
}
]
git.kernel.org/stable/c/086e92b1d68c6338535f715aad173f8cf4bfbc8c
git.kernel.org/stable/c/0ffb460be3abac86f884a8c548bb02724ec370f4
git.kernel.org/stable/c/212166510582631994be4f4b3fe15e10a03c1dd4
git.kernel.org/stable/c/398a24447eb60f060c8994221cb5ae6caf355fa1
git.kernel.org/stable/c/5340858147e3dc60913fb3dd0cbb758ec4a26e66
git.kernel.org/stable/c/6dcea66d3bb519b426282588f38e884e07893c1f
git.kernel.org/stable/c/d612c3f3fae221e7ea736d196581c2217304bbbc
git.kernel.org/stable/c/deeeb65c6ee404f2d1fb80b38b2730645c0f4663