CVE-2022-48643
netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() syzbot is reporting underflow of nft_counters_enabled counter at
nf_tables_addchain() [1], for commit 43eb8949cfdffa76 ("netfilter:
nf_tables: do not leave chain stats enabled on error") missed that
nf_tables_chain_destroy() after nft_basechain_init() in the error path of
nf_tables_addchain() decrements the counter because nft_basechain_init()
makes nft_is_base_chain() return true by setting NFT_CHAIN_BASE flag. Increment the counter immediately after returning from
nft_basechain_init().
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: corrige el desbordamiento de nft_counters_enabled en nf_tables_addchain() syzbot informa el desbordamiento del contador nft_counters_enabled en nf_tables_addchain() [1], para el commit 43eb8949cfdffa76 ("netfilter: nf_tables: no salir estadísticas de cadena habilitadas en caso de error") pasó por alto que nf_tables_chain_destroy() después de nft_basechain_init() en la ruta de error de nf_tables_addchain() disminuye el contador porque nft_basechain_init() hace que nft_is_base_chain() devuelva verdadero al configurar el indicador NFT_CHAIN_BASE. Incrementa el contador inmediatamente después de regresar de nft_basechain_init().
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() syzbot is reporting underflow of nft_counters_enabled counter at nf_tables_addchain() [1], for commit 43eb8949cfdffa76 ("netfilter: nf_tables: do not leave chain stats enabled on error") missed that nf_tables_chain_destroy() after nft_basechain_init() in the error path of nf_tables_addchain() decrements the counter because nft_basechain_init() makes nft_is_base_chain() return true by setting NFT_CHAIN_BASE flag. Increment the counter immediately after returning from nft_basechain_init().
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-25 CVE Reserved
- 2024-04-28 CVE Published
- 2024-12-19 CVE Updated
- 2025-03-29 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/c907dfe4eaca9665694a0340de1458a093abe354 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/6d7ddee503951641f3ec6f0e3269446970bbcdab | Vuln. Introduced | |
| https://git.kernel.org/stable/c/98a621ef45e3605c7487f7fa6fec7df94697d6a2 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10.140 < 5.10.146 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10.140 < 5.10.146" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15.64 < 5.15.71 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15.64 < 5.15.71" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19.6 < 5.19.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19.6 < 5.19.12" | en |
Affected
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