wifi: p54: validate RX frame length in p54_rx_eeprom_readback()
Noroxi assessment
Priority: Monitor (action score 0/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
- Fixed version: Linux Linux 25c3b85af3fc4f8043159b14e65790fc3bbdaf48, 7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7, 88f7044f92b8326fbfab26d0d8ed297c367ebb76; azl3 kernel 6.6.145.2-1 on Azure Linux 3.0 6.6.150.1-1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 25c3b85af3fc4f8043159b14e65790fc3bbdaf48, 7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7, 88f7044f92b8326fbfab26d0d8ed297c367ebb76; azl3 kernel 6.6.145.2-1 on Azure Linux 3.0 6.6.150.1-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: wifi: p54: validate RX frame length in p54_rx_eeprom_readback() p54_rx_eeprom_readback() copies the requested EEPROM slice out of a device-supplied readback frame without checking that the skb actually holds that many bytes. Commit da1b9a55ff11 ("wifi: p54: prevent buffer-overflow in p54_rx_eeprom_readback()") closed the destination overflow by copying a fixed priv->eeprom_slice_size (and rejecting a mismatched advertised len), but the source side is still unbounded: nothing verifies the frame is long enough to supply that many bytes. A malicious USB device can send a short frame whose advertised len matches priv->eeprom_slice_size while the payload is truncated. The equality check passes and memcpy() reads past the end of the skb, leaking adjacent heap: BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507) Read of size 1016 at addr ffff88800f077114 by task swapper/0/0 Call Trace: <IRQ> ... __asan_memcpy (mm/kasan/shadow.c:105) p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507) p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163) __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657) dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005) ... </IRQ> The buggy address belongs to the object at ffff88800f0770c0 which belongs to the cache skbuff_small_head of size 704 The buggy address is located 84 bytes inside of allocated 704-byte region [ffff88800f0770c0, ffff88800f077380) Check that the slice fits in the skb before copying.
- Published
- Aug 5, 2026
- Updated
- Aug 19, 2026
- EPSS
- 0.1% · 6th percentile
- CWE
- —
Report tools
Action score
0
Monitor
Low priority for now.
- CVSS
- 0 / 40 · —
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
—
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
- 2.6.28affected
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before 7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7affected · git
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before 88f7044f92b8326fbfab26d0d8ed297c367ebb76affected · git
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before f21b7e096fe5371bf697cd410537fb434a763f5eaffected · git
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before 25c3b85af3fc4f8043159b14e65790fc3bbdaf48affected · git
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before f46f8f9c43fd02f4dd5f716d4bda296a523c04f0affected · git
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before d38f5d868a0a4770e3bcd0925e16c46acdbc9509affected · git
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before 9096e1f7014174067239a63df18ae5f28301990daffected · git
- 7cb770729ba895f73253dfcd46c3fcba45d896f9 and later · before ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6ceaaffected · git
- before 2.6.28not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.187-1 | 6.1.187-1 |
| Debian:12 | linux-6.12 | before 6.12.101-1~deb12u1 | 6.12.101-1~deb12u1 |
| Debian:13 | linux | before 6.12.101-1 | 6.12.101-1 |
| Debian:14 | linux | before 7.1.6-1 | 7.1.6-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
- CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler40Plan
- CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index40Plan
- CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index40Plan
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 | 25c3b85af3fc4f8043159b14e65790fc3bbdaf48 | Vendor (CNA) |
| Linux Linux | 7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7 | Vendor (CNA) |
| Linux Linux | 88f7044f92b8326fbfab26d0d8ed297c367ebb76 | Vendor (CNA) |
| Linux Linux | 9096e1f7014174067239a63df18ae5f28301990d | Vendor (CNA) |
| Linux Linux | d38f5d868a0a4770e3bcd0925e16c46acdbc9509 | Vendor (CNA) |
| Linux Linux | ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea | Vendor (CNA) |
| Linux Linux | f21b7e096fe5371bf697cd410537fb434a763f5e | Vendor (CNA) |
| Linux Linux | f46f8f9c43fd02f4dd5f716d4bda296a523c04f0 | Vendor (CNA) |
| azl3 kernel 6.6.145.2-1 on Azure Linux 3.0 | 6.6.150.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| debian:linux | 6.1.187-1 · Debian:12 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.101-1~deb12u1 · 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.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
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Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-0742 · Aug 5, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
No CVSS vector for this record, so attack conditions can't be derived.
Weakness class (CWE)
—
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
Show all references (7 more)Show less
- git.kernel.org/stable/c/7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7
- git.kernel.org/stable/c/88f7044f92b8326fbfab26d0d8ed297c367ebb76
- git.kernel.org/stable/c/9096e1f7014174067239a63df18ae5f28301990d
- git.kernel.org/stable/c/d38f5d868a0a4770e3bcd0925e16c46acdbc9509
- git.kernel.org/stable/c/ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea
- git.kernel.org/stable/c/f21b7e096fe5371bf697cd410537fb434a763f5e
- git.kernel.org/stable/c/f46f8f9c43fd02f4dd5f716d4bda296a523c04f0
Vendor advisories and official records. Exploit/PoC links are deliberately left out.