EUVD-2026-76337
GHSA-rjrm-jj77-cvq6
Lifecycle Timeline
2DescriptionCVE.org
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: hp-bioscfg: fix heap OOB read in sk_store() and kek_store()
sk_store() and kek_store() strip a trailing newline from the sysfs write before allocating the key buffer:
length = count; if (buf[length - 1] == '\n') length--; bioscfg_drv.spm_data.signing_key = kmemdup(buf, length, GFP_KERNEL);
but then pass the original "count" (not "length") as the copy size to hp_wmi_perform_query(), which memcpy()s that many bytes out of the "length"-sized allocation, reading one byte past it whenever the write ends in a newline, the normal case for a shell "echo" into sysfs.
KASAN confirms this directly:
BUG: KASAN: slab-out-of-bounds in hp_wmi_perform_query+0x1e9/0x460 [hp_bioscfg] Read of size 28 at addr ffff88813c8e2b80 by task python3/16022 ... sk_store+0xa7/0x240 [hp_bioscfg] kernfs_fop_write_iter+0x3e1/0x5d0 ... The buggy address is located 0 bytes inside of allocated 27-byte region [ffff88813c8e2b80, ffff88813c8e2b9b)
Reproduced identically for kek_store, and at multiple write sizes (28, 57, 201 bytes), each time reading exactly one byte past a kmemdup() allocation one byte smaller than the write.
Fix by passing "length" instead of "count" to hp_wmi_perform_query() in both functions.
Analysis
In the Linux kernel, the following vulnerability has been resolved: platform/x86: hp-bioscfg: fix heap OOB read in sk_store() and kek_store() sk_store() and kek_store() strip a trailing newline from the sysfs write before allocating the key buffer: length = count; if (buf[length - 1] == '\n') length--; bioscfg_drv.spm_data.signing_key = kmemdup(buf, length, GFP_KERNEL); but then pass the original "count" (not "length") as the copy size to hp_wmi_perform_query(), which memcpy()s that many bytes out of the "length"-sized allocation, reading one byte past it whenever the write ends in a newline, the normal case for a shell "echo" into sysfs. KASAN confirms this directly: BUG: KASAN: slab-out-of-bounds in hp_wmi_perform_query+0x1e9/0x460 [hp_bioscfg] Read of size 28 at addr ffff88813c8e2b80 by task python3/16022 ... …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Threat intelligence, references, and detailed analysis are available after sign-in.
Adobe Flash Player contains a heap-based buffer overflow that allows remote code execution, exploited as a zero-day in J
sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not
The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 has incorrect exception ha
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software co
HP ProCurve Manager (PCM) 3.20 and 4.0, PCM+ 3.20 and 4.0, Identity Driven Manager (IDM) 4.0, and Application Lifecycle
Remote code execution in Adobe Flash Player allows network attackers to execute arbitrary code via integer overflow expl
HPE Data Protector before 7.03_108, 8.x before 8.15, and 9.x before 9.06 allow remote attackers to execute arbitrary cod
Unspecified vulnerability in HP Storage Data Protector 8.x allows remote attackers to execute arbitrary code via unknown
Directory traversal vulnerability in CommunicationServlet in HP Service Virtualization 3.x before 3.50.1, when the AutoP
Multiple unspecified vulnerabilities in HP SiteScope 11.20 and 11.21, when SOAP is used, allow remote attackers to execu
UpdateDomainControllerServlet in the SNAC registration server in HP ProCurve Manager (PCM) 3.20 and 4.0, PCM+ 3.20 and 4
Unspecified vulnerability in HP LoadRunner before 11.52 allows remote attackers to execute arbitrary code via unknown ve
Same technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today