CVE-2026-64571: linux
Vulnerability summary
CVE-2026-64571 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 28 · Related 26Timeline
- 05-08-2026PublishedVulnerability first disclosed.
- 19-08-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
Risk metrics not yet published.
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
0.00 pp
From 0.17% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu169 products
- linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-38.38
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1014.14
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.187-1 | < 6.12.101-1 | < 7.1.6-1
- linux-6.12< 6.12.101-1~deb12u1
Linux1 product
- linux≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < 7a456ffcd20bd92ad0ef46c1aaa0e39e3be1f7e7 | ≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < 88f7044f92b8326fbfab26d0d8ed297c367ebb76 | ≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < f21b7e096fe5371bf697cd410537fb434a763f5e | ≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < 25c3b85af3fc4f8043159b14e65790fc3bbdaf48 | ≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < f46f8f9c43fd02f4dd5f716d4bda296a523c04f0 | ≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < d38f5d868a0a4770e3bcd0925e16c46acdbc9509 | ≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < 9096e1f7014174067239a63df18ae5f28301990d | ≥ 7cb770729ba895f73253dfcd46c3fcba45d896f9, < ebd6d37fa94bee929e0b4c9ca19fdf9b1dcf6cea | 2.6.28
3 vendors · 172 products
