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CVE-2022-49058— cifs: potential buffer overflow in handling symlinks

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于处理符号链接时可能存在缓冲区溢出。

CVSS 9.1 · Critical EPSS 0.87% · P58

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< 3e582749e742e662a8e9bb37cffac62dccaaa1e2 affected
c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< 1316c28569a80ab3596eeab05bf5e01991e7e739 affected
c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< eb5f51756944735ac70cd8bb38637cc202e29c91 affected
c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< 22d658c6c5affed10c8907e67160cef0b6c92186 affected
c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< 4e166a41180be2f1e66bbb6d46448e80a9a5ec05 affected
c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< 9901b07ba42b39266b34a888e48d7306fd707bee affected
c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< 515e7ba11ef043d6febe69389949c8ef5f25e9d0 affected
c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131< 64c4a37ac04eeb43c42d272f6e6c8c12bfcf4304 affected
… +10 more rows
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I. Basic Information for CVE-2022-49058

Vulnerability Information
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Vulnerability Title
cifs: potential buffer overflow in handling symlinks
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cifs: potential buffer overflow in handling symlinks Smatch printed a warning: arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error: __memcpy() 'dctx->buf' too small (16 vs u32max) It's caused because Smatch marks 'link_len' as untrusted since it comes from sscanf(). Add a check to ensure that 'link_len' is not larger than the size of the 'link_str' buffer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于处理符号链接时可能存在缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c69c1b6eaea1b3e1eecf7ad2fba0208ac4a11131 ~ 3e582749e742e662a8e9bb37cffac62dccaaa1e2 -
Linux Linux 2.6.37 -

II. Public POCs for CVE-2022-49058

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III. Intelligence Information for CVE-2022-49058

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Patches & Fixes for CVE-2022-49058 (8)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-49561 9.8 CRITICAL netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49149 9.8 CRITICAL rxrpc: Fix call timer start racing with call destruction
CVE-2022-49407 9.8 CRITICAL dlm: fix plock invalid read
CVE-2022-49356 9.8 CRITICAL SUNRPC: Trap RDMA segment overflows
CVE-2022-49362 9.8 CRITICAL NFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-49280 9.8 CRITICAL NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49260 9.8 CRITICAL crypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-49418 9.8 CRITICAL NFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-49201 9.8 CRITICAL ibmvnic: fix race between xmit and reset
CVE-2022-49194 9.8 CRITICAL net: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-49093 9.8 CRITICAL skbuff: fix coalescing for page_pool fragment recycling
CVE-2022-49094 9.8 CRITICAL net/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-49111 8.8 HIGH Bluetooth: Fix use after free in hci_send_acl
CVE-2022-49535 8.8 HIGH scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-49238 8.8 HIGH ath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
CVE-2022-49519 8.8 HIGH ath10k: skip ath10k_halt during suspend for driver state RESTARTING
CVE-2022-49138 8.8 HIGH Bluetooth: hci_event: Ignore multiple conn complete events
CVE-2022-49471 8.8 HIGH rtw89: cfo: check mac_id to avoid out-of-bounds
CVE-2022-49159 8.8 HIGH scsi: qla2xxx: Implement ref count for SRB
CVE-2022-49470 8.8 HIGH Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49058

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