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CVE-2024-26926— binder: check offset alignment in binder_get_object()

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，该漏洞源于删除了通过调用binder_alloc_copy_from_buffer() -> check_buffer()完成的偏移对齐检查。

CVSS 7.8 · High EPSS 0.44% · P37

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials

Affected Version Matrix 21

VendorProduct Version RangeStatus
Linux Linux c056a6ba35e00ae943e377eb09abd77a6915b31a< 68a28f551e4690db2b27b3db716c7395f6fada12 affected
23e9d815fad84c1bee3742a8de4bd39510435362< 48a1f83ca9c68518b1a783c62e6a8223144fa9fc affected
7a9ad4aceb0226b391c9d3b8e4ac2e7d438b6bde< a2fd6dbc98be1105a1d8e9e31575da8873ef115c affected
6d98eb95b450a75adb4516a1d33652dc78d2b20c< a6d2a8b211c874971ee4cf3ddd167408177f6e76 affected
6d98eb95b450a75adb4516a1d33652dc78d2b20c< 1d7f1049035b2060342f11eff957cf567d810bdc affected
6d98eb95b450a75adb4516a1d33652dc78d2b20c< f01d6619045704d78613b14e2e0420bfdb7f1c15 affected
6d98eb95b450a75adb4516a1d33652dc78d2b20c< aaef73821a3b0194a01bd23ca77774f704a04d40 affected
66e12f5b3a9733f941893a00753b10498724607d affected
… +13 more rows
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I. Basic Information for CVE-2024-26926

Vulnerability Information
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Vulnerability Title
binder: check offset alignment in binder_get_object()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: binder: check offset alignment in binder_get_object() Commit 6d98eb95b450 ("binder: avoid potential data leakage when copying txn") introduced changes to how binder objects are copied. In doing so, it unintentionally removed an offset alignment check done through calls to binder_alloc_copy_from_buffer() -> check_buffer(). These calls were replaced in binder_get_object() with copy_from_user(), so now an explicit offset alignment check is needed here. This avoids later complications when unwinding the objects gets harder. It is worth noting this check existed prior to commit 7a67a39320df ("binder: add function to copy binder object from buffer"), likely removed due to redundancy at the time.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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，该漏洞源于删除了通过调用binder_alloc_copy_from_buffer() -> check_buffer()完成的偏移对齐检查。
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 c056a6ba35e00ae943e377eb09abd77a6915b31a ~ 68a28f551e4690db2b27b3db716c7395f6fada12 -
Linux Linux 5.17 -

II. Public POCs for CVE-2024-26926

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III. Intelligence Information for CVE-2024-26926

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Mailing List Discussions for CVE-2024-26926 (1)

Other References for CVE-2024-26926 (7)

Same Patch Batch · Linux · 2024-04-24 · 4 CVEs total

CVE-2024-26925 7.8 HIGH netfilter: nf_tables: release mutex after nft_gc_seq_end from abort path
CVE-2024-26924 7.8 HIGH netfilter: nft_set_pipapo: do not free live element
CVE-2024-26923 7.8 HIGH af_unix: Fix garbage collector racing against connect()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26926

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