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High severity · published Dec 27, 2024
CVE-2024-56650
netfilter: x_tables: fix LED ID check in led_tg_check()
7.1
CVSS
0.3%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: x_tables: fix LED ID check in led_tg_check() Syzbot has reported the following BUG detected by KASAN: BUG: KASAN: slab-out-of-bounds in strlen+0x58/0x70 Read of size 1 at addr ffff8881022da0c8 by task repro/5879 ... Call Trace: <TASK> dump_stack_lvl+0x241/0x360 ? __pfx_dump_stack_lvl+0x10/0x10 ? __pfx__printk+0x10/0x10 ? _printk+0xd5/0x120 ? __virt_addr_valid+0x183/0x530 ? __virt_addr_valid+0x183/0x530 print_report+0x169/0x550 ? __virt_addr_valid+0x183/0x530 ? __virt_addr_valid+0x183/0x530 ? __virt_addr_valid+0x45f/0x530 ? __phys_addr+0xba/0x170 ? strlen+0x58/0x70 kasan_report+0x143/0x180 ? strlen+0x58/0x70 strlen+0x58/0x70 kstrdup+0x20/0x80 led_tg_check+0x18b/0x3c0 xt_check_target+0x3bb/0xa40 ? __pfx_xt_check_target+0x10/0x10 ? stack_depot_save_flags+0x6e4/0x830 ? nft_target_init+0x174/0xc30 nft_target_init+0x82d/0xc30 ? __pfx_nft_target_init+0x10/0x10 ? nf_tables_newrule+0x1609/0x2980 ? nf_tables_newrule+0x1609/0x2980 ? rcu_is_watching+0x15/0xb0 ? nf_tables_newrule+0x1609/0x2980 ? nf_tables_newrule+0x1609/0x2980 ? __kmalloc_noprof+0x21a/0x400 nf_tables_newrule+0x1860/0x2980 ? __pfx_nf_tables_newrule+0x10/0x10 ? __nla_parse+0x40/0x60 nfnetlink_rcv+0x14e5/0x2ab0 ? __pfx_validate_chain+0x10/0x10 ? __pfx_nfnetlink_rcv+0x10/0x10 ? __lock_acquire+0x1384/0x2050 ? netlink_deliver_tap+0x2e/0x1b0 ? __pfx_lock_release+0x10/0x10 ? netlink_deliver_tap+0x2e/0x1b0 netlink_unicast+0x7f8/0x990 ? __pfx_netlink_unicast+0x10/0x10 ? __virt_addr_valid+0x183/0x530 ? __check_object_size+0x48e/0x900 netlink_sendmsg+0x8e4/0xcb0 ? __pfx_netlink_sendmsg+0x10/0x10 ? aa_sock_msg_perm+0x91/0x160 ? __pfx_netlink_sendmsg+0x10/0x10 __sock_sendmsg+0x223/0x270 ____sys_sendmsg+0x52a/0x7e0 ? __pfx_____sys_sendmsg+0x10/0x10 __sys_sendmsg+0x292/0x380 ? __pfx___sys_sendmsg+0x10/0x10 ? lockdep_hardirqs_on_prepare+0x43d/0x780 ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 ? exc_page_fault+0x590/0x8c0 ? do_syscall_64+0xb6/0x230 do_syscall_64+0xf3/0x230 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... </TASK> Since an invalid (without '\0' byte at all) byte sequence may be passed from userspace, add an extra check to ensure that such a sequence is rejected as possible ID and so never passed to 'kstrdup()' and further.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.30 before 5.4.287; 5.5 before 5.10.231; 5.11 before 5.15.174; 5.16 before 6.1.120; 6.2 before 6.6.66; 6.7 before 6.12.5; +1 more · source: NVD
LI
Linux · Linux
268cb38e1802db560c73167e643f14a3dcb4b07c before 147a42bb02de8735cb08476be6d0917987d022c2; 268cb38e1802db560c73167e643f14a3dcb4b07c before ad28612ebae1fcc1104bd432e99e99d87f6bfe09; 268cb38e1802db560c73167e643f14a3dcb4b07c before 36a9d94dac28beef6b8abba46ba8874320d3e800; 268cb38e1802db560c73167e643f14a3dcb4b07c before ab9916321c95f5280b72b4c5055e269f98627efe; 268cb38e1802db560c73167e643f14a3dcb4b07c before a9bcc0b70d9baf3ff005874489a0dc9d023b54c3; 268cb38e1802db560c73167e643f14a3dcb4b07c before c40c96d98e536fc1daaa125c2332b988615e30a4; +2 more · source: vendor
RR
RUGGEDCOM RST2428P · Siemens
before V3.2 · source: CISA
SX
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family · Siemens
before V3.2 · source: CISA
SX
SCALANCE XCM-/XRM-/XCH-/XRH-300 family · Siemens
before V3.2 · source: CISA
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
Affected product
KE
Kernel
Linux
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-56650
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-56650
Patch
https://git.kernel.org/stable/c/04317f4eb2aad312ad85c1a17ad81fe75f1f9bc7
Patch
https://git.kernel.org/stable/c/147a42bb02de8735cb08476be6d0917987d022c2
Patch
https://git.kernel.org/stable/c/36a9d94dac28beef6b8abba46ba8874320d3e800
Patch
https://git.kernel.org/stable/c/a9bcc0b70d9baf3ff005874489a0dc9d023b54c3
Patch
https://git.kernel.org/stable/c/ab9916321c95f5280b72b4c5055e269f98627efe
Patch
https://git.kernel.org/stable/c/ad28612ebae1fcc1104bd432e99e99d87f6bfe09
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