{"id":"DEBIAN-CVE-2023-54156","details":"In the Linux kernel, the following vulnerability has been resolved:  sfc: fix crash when reading stats while NIC is resetting  efx_net_stats() (.ndo_get_stats64) can be called during an ethtool  selftest, during which time nic_data-\u003emc_stats is NULL as the NIC has  been fini'd.  In this case do not attempt to fetch the latest stats  from the hardware, else we will crash on a NULL dereference:     BUG: kernel NULL pointer dereference, address: 0000000000000038     RIP efx_nic_update_stats     abridged calltrace:     efx_ef10_update_stats_pf     efx_net_stats     dev_get_stats     dev_seq_printf_stats Skipping the read is safe, we will simply give out stale stats. To ensure that the free in efx_ef10_fini_nic() does not race against  efx_ef10_update_stats_pf(), which could cause a TOCTTOU bug, take the  efx-\u003estats_lock in fini_nic (it is already held across update_stats).","modified":"2026-09-15T09:03:03.308601274Z","published":"2025-12-24T13:16:17.630Z","upstream":["CVE-2023-54156"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-54156"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.52-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54156.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54156.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54156.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}