tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING
In the Linux kernel, the following vulnerability has been resolved: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING syzbot reported the following uninit-value access issue [1]: ===================================================== BUG: KMSAN: uninit-value in strlen lib/string.c:418 [inline] BUG: KMSAN: uninit-value in strstr+0xb8/0x2f0 lib/string.c:756 strlen lib/string.c:418 [inline] strstr+0xb8/0x2f0 lib/string.c:756 tipc_nl_node_reset_link_stats+0x3ea/0xb50 net/tipc/node.c:2595 genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x11ec/0x1290 net/netlink/genetlink.c:1066 netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2545 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0xf47/0x1250 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:559 __alloc_skb+0x318/0x740 net/core/skbuff.c:650 alloc_skb include/linux/skbuff.h:1286 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline] netlink_sendmsg+0xb34/0x13d0 net/netlink/af_netlink.c:1885 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd TIPC bearer-related names including link names must be null-terminated strings. If a link name which is not null-terminated is passed through netlink, strstr() and similar functions can cause buffer overrun. This causes the above issue. This patch changes the nla_policy for bearer-related names from NLA_STRING to NLA_NUL_STRING. This resolves the issue by ensuring that only null-terminated strings are accepted as bearer-related names. syzbot reported similar uninit-value issue related to bearer names [2]. The root cause of this issue is that a non-null-terminated bearer name was passed. This patch also resolved this issue.
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- May 21, 2024
- Updated
- Aug 5, 2026
- EPSS
- 0.3% · 17th percentile
- CWE
- CWE-908
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 5.5
- CNA · Linux
- 7.1
- 1.6 point gap
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel3.19 and later · before 4.14.330
- linux linux kernel4.15 and later · before 4.19.299
- linux linux kernel4.20 and later · before 5.4.261
- linux linux kernel5.5 and later · before 5.10.201
- linux linux kernel5.11 and later · before 5.15.139
- linux linux kernel5.16 and later · before 6.1.63
- linux linux kernel6.2 and later · before 6.5.12
- linux linux kernel6.6 and later · before 6.6.2
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 3.19affected
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before 6744008c354bca2e4686a5b6056ee6b535d9f67daffected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before 2426425d686b43adbc4f2f4a367b494f06f159d6affected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before 2199260c42e6fbc5af8adae3bf78e623407c91b0affected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before b33d130f07f1decd756b849ab03c23d11d4dd294affected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before 3907b89cd17fcc23e9a80789c36856f00ece0ba8affected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before 4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4affected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before abc1582119e8c4af14cedb0db6541fd603f45a04affected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before 560992f41c0cea44b7603bc9e6c73bffbf6b5709affected · git
- 0655f6a8635b1b66f2434d5556b1044c14b1ccaf and later · before 19b3f72a41a8751e26bffc093bb7e1cef29ad579affected · git
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | bpftool | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-abi-stablelists | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-core | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-cross-headers | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-debug | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-debug-core | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-debug-devel | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules-extra | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-devel | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-doc | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-headers | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-modules | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-modules-extra | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-tools | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-tools-libs | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-tools-libs-devel | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-zfcpdump | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-zfcpdump-core | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-zfcpdump-devel | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-zfcpdump-modules | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
| AlmaLinux:8 | perf | before 4.18.0-553.16.1.el8_10 | 4.18.0-553.16.1.el8_10 |
+3
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 19b3f72a41a8751e26bffc093bb7e1cef29ad579 | Vendor (CNA) |
| Linux Linux | 2199260c42e6fbc5af8adae3bf78e623407c91b0 | Vendor (CNA) |
| Linux Linux | 2426425d686b43adbc4f2f4a367b494f06f159d6 | Vendor (CNA) |
| Linux Linux | 3907b89cd17fcc23e9a80789c36856f00ece0ba8 | Vendor (CNA) |
| Linux Linux | 4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4 | Vendor (CNA) |
| Linux Linux | 560992f41c0cea44b7603bc9e6c73bffbf6b5709 | Vendor (CNA) |
| Linux Linux | 6744008c354bca2e4686a5b6056ee6b535d9f67d | Vendor (CNA) |
| Linux Linux | abc1582119e8c4af14cedb0db6541fd603f45a04 | Vendor (CNA) |
| Linux Linux | b33d130f07f1decd756b849ab03c23d11d4dd294 | Vendor (CNA) |
| almalinux:bpftool | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-abi-stablelists | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-core | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-cross-headers | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-core | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-devel | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-modules | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-modules-extra | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-devel | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-doc | 4.18.0-553.16.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| debian:linux | 6.1.64-1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2024-50302181 days apartHID: core: zero-initialize the report bufferKEV52Plan
- CVE-2024-47685153 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()36Monitor
- CVE-2021-475533 days apartsched/scs: Reset task stack state in bringup_cpu()31Monitor
- CVE-2024-368989 days apartgpiolib: cdev: fix uninitialised kfifo31Monitor
- CVE-2024-2702220 days apartfork: defer linking file vma until vma is fully initialized31Monitor
- CVE-2024-50143170 days apartudf: fix uninit-value use in udf_get_fileshortad31Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-908 · Use of Uninitialized ResourceCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/19b3f72a41a8751e26bffc093bb7e1cef29ad579
- git.kernel.org/stable/c/2199260c42e6fbc5af8adae3bf78e623407c91b0
- git.kernel.org/stable/c/2426425d686b43adbc4f2f4a367b494f06f159d6
- git.kernel.org/stable/c/3907b89cd17fcc23e9a80789c36856f00ece0ba8
- git.kernel.org/stable/c/4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4
- git.kernel.org/stable/c/560992f41c0cea44b7603bc9e6c73bffbf6b5709
- git.kernel.org/stable/c/6744008c354bca2e4686a5b6056ee6b535d9f67d
- git.kernel.org/stable/c/abc1582119e8c4af14cedb0db6541fd603f45a04
- git.kernel.org/stable/c/b33d130f07f1decd756b849ab03c23d11d4dd294
Vendor advisories and official records. Exploit/PoC links are deliberately left out.