net: fix geneve_opt length integer overflow
In the Linux kernel, the following vulnerability has been resolved: net: fix geneve_opt length integer overflow struct geneve_opt uses 5 bit length for each single option, which means every vary size option should be smaller than 128 bytes. However, all current related Netlink policies cannot promise this length condition and the attacker can exploit a exact 128-byte size option to *fake* a zero length option and confuse the parsing logic, further achieve heap out-of-bounds read. One example crash log is like below: [ 3.905425] ================================================================== [ 3.905925] BUG: KASAN: slab-out-of-bounds in nla_put+0xa9/0xe0 [ 3.906255] Read of size 124 at addr ffff888005f291cc by task poc/177 [ 3.906646] [ 3.906775] CPU: 0 PID: 177 Comm: poc-oob-read Not tainted 6.1.132 #1 [ 3.907131] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 [ 3.907784] Call Trace: [ 3.907925] [ 3.908048] dump_stack_lvl+0x44/0x5c [ 3.908258] print_report+0x184/0x4be [ 3.909151] kasan_report+0xc5/0x100 [ 3.909539] kasan_check_range+0xf3/0x1a0 [ 3.909794] memcpy+0x1f/0x60 [ 3.909968] nla_put+0xa9/0xe0 [ 3.910147] tunnel_key_dump+0x945/0xba0 [ 3.911536] tcf_action_dump_1+0x1c1/0x340 [ 3.912436] tcf_action_dump+0x101/0x180 [ 3.912689] tcf_exts_dump+0x164/0x1e0 [ 3.912905] fw_dump+0x18b/0x2d0 [ 3.913483] tcf_fill_node+0x2ee/0x460 [ 3.914778] tfilter_notify+0xf4/0x180 [ 3.915208] tc_new_tfilter+0xd51/0x10d0 [
CVE-2025-22055
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-2025-22055
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": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "a2cb85f989e2074e2f392e00188c438cab3de088",
"versionType": "git"
},
{
"status": "affected",
"version": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "b4513ad0f391871d3feee8ddf535609a3aabeeac",
"versionType": "git"
},
{
"status": "affected",
"version": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "21748669c5825761cbbf47cbeeb01387ddccc8cb",
"versionType": "git"
},
{
"status": "affected",
"version": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "5a2976cc4d9c36ff58a0f10e35ce4283cbaa9c0e",
"versionType": "git"
},
{
"status": "affected",
"version": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "2952776c69a1a551649ed770bf22e3f691f6ec65",
"versionType": "git"
},
{
"status": "affected",
"version": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "738ae5712215fe9181587d582b23333f02c62ca6",
"versionType": "git"
},
{
"status": "affected",
"version": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "4d606069bdd3c76f8ab1f06796c97ef7f4746807",
"versionType": "git"
},
{
"status": "affected",
"version": "0ed5269f9e41f495c8e9020c85f5e1644c1afc57",
"lessThan": "b27055a08ad4b415dcf15b63034f9cb236f7fb40",
"versionType": "git"
}
],
"programFiles": [
"net/ipv4/ip_tunnel_core.c",
"net/netfilter/nft_tunnel.c",
"net/sched/act_tunnel_key.c",
"net/sched/cls_flower.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.236",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.180",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.134",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.87",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.23",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13.11",
"versionType": "semver",
"lessThanOrEqual": "6.13.*"
},
{
"status": "unaffected",
"version": "6.14.2",
"versionType": "semver",
"lessThanOrEqual": "6.14.*"
},
{
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv4/ip_tunnel_core.c",
"net/netfilter/nft_tunnel.c",
"net/sched/act_tunnel_key.c",
"net/sched/cls_flower.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-22055
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26975 · Revision 1
- Added to Heist Feed
- Publisher date