CVE-2026-74498None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set When a USB audio endpoint requests full packet transfers via the fill_max descriptor flag, dat…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: Fix DMA buffer out-of-bounds write when fill_max is set
When a USB audio endpoint requests full packet transfers via the fill_max descriptor flag, data_ep_set_params() promotes ep->curpacksize to ep->maxpacksize. However, maxsize is left at the original sample-rate derived value.
Since u->buffer_size is allocated as maxsize * packets, the resulting DMA buffer is far too small for the requested transfer length. When the USB host controller streams up to curpacksize bytes per packet, it writes past the end of the buffer via DMA, corrupting kernel heap memory.
Update maxsize to curpacksize when fill_max is set so that the allocated DMA buffer size matches the actual transfer request size.
[ changed to reassign maxsize only when ep->fill_max is set -- tiwai ]
Linux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < 10c24e6fddf4bdff0b6b05a47a4347b38e6960e8Linux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < b1770f9ac35c0ffc34914d52347c65dcd5ac049bLinux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < 6cbdd11f9b05b92f4aa29f09a66e19ed0e25e66cLinux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < 3852974608f53e530e27c21d0c6c7d79c17b3f5aLinux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < f9b6c9576568169139ac151f7881474f384659fdLinux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < 04595233e5606d452f9f47e6989fc7ae7440fd40Linux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < bd65b7191683bebd9923904f0558b9211b9129daLinux >= 8fdff6a319e7dac757c558bd283dc4577e68cde7 < d0199ae1666ff9ae2d1d568d64c3430d4c47f0e5Linux 3.5Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-99284Nonenet: skbuff: propagate shared-frag marker in skb_zerocopy()
CVE-2026-99283Nonenetfilter: conntrack: tcp: use UNACK timeout for non-closing RST packets
CVE-2026-99272Nonesmb: client: validate the data area in SMB2_read()
CVE-2026-99271NoneALSA: line6: Clear prev_fbuf on capture buffer release
CVE-2026-99273Noneksmbd: reserve space for the UTF-16 terminator in stream info
CVE-2026-99275Nonesmb: client: reject short SESSION_SETUP responses