CVE-2026-64571wifi: p54: validate RX frame length in p54_rx_eeprom_readback()
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 17 days later
· 17 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Awaiting Analysis.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < 7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < 88f7044f92b8326fbfab26d0d8ed297c367ebb76
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < f21b7e096fe5371bf697cd410537fb434a763f5e
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < 25c3b85af3fc4f8043159b14e65790fc3bbdaf48
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < f46f8f9c43fd02f4dd5f716d4bda296a523c04f0
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < d38f5d868a0a4770e3bcd0925e16c46acdbc9509
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < 9096e1f7014174067239a63df18ae5f28301990d
- affected 7cb770729ba895f73253dfcd46c3fcba45d896f9 – < ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea
- affected 2.6.28
- unaffected < 2.6.28
- unaffected 5.10.265 – ≤ 5.10.*
- unaffected 5.15.216 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.148 – ≤ 6.6.*
- unaffected 6.12.101 – ≤ 6.12.*
- unaffected 6.18.42 – ≤ 6.18.*
- unaffected 7.1.6 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7 (opens in a new tab)
- https://git.kernel.org/stable/c/88f7044f92b8326fbfab26d0d8ed297c367ebb76 (opens in a new tab)
- https://git.kernel.org/stable/c/f21b7e096fe5371bf697cd410537fb434a763f5e (opens in a new tab)
- https://git.kernel.org/stable/c/25c3b85af3fc4f8043159b14e65790fc3bbdaf48 (opens in a new tab)
- https://git.kernel.org/stable/c/f46f8f9c43fd02f4dd5f716d4bda296a523c04f0 (opens in a new tab)
- https://git.kernel.org/stable/c/d38f5d868a0a4770e3bcd0925e16c46acdbc9509 (opens in a new tab)
- https://git.kernel.org/stable/c/9096e1f7014174067239a63df18ae5f28301990d (opens in a new tab)
- https://git.kernel.org/stable/c/ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-53265 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-64571)Record last updated .