-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-4308-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso October 01, 2018 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : linux CVE ID : CVE-2018-6554 CVE-2018-6555 CVE-2018-7755 CVE-2018-9363 CVE-2018-9516 CVE-2018-10902 CVE-2018-10938 CVE-2018-13099 CVE-2018-14609 CVE-2018-14617 CVE-2018-14633 CVE-2018-14678 CVE-2018-14734 CVE-2018-15572 CVE-2018-15594 CVE-2018-16276 CVE-2018-16658 CVE-2018-17182 Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2018-6554 A memory leak in the irda_bind function in the irda subsystem was discovered. A local user can take advantage of this flaw to cause a denial of service (memory consumption). CVE-2018-6555 A flaw was discovered in the irda_setsockopt function in the irda subsystem, allowing a local user to cause a denial of service (use-after-free and system crash). CVE-2018-7755 Brian Belleville discovered a flaw in the fd_locked_ioctl function in the floppy driver in the Linux kernel. The floppy driver copies a kernel pointer to user memory in response to the FDGETPRM ioctl. A local user with access to a floppy drive device can take advantage of this flaw to discover the location kernel code and data. CVE-2018-9363 It was discovered that the Bluetooth HIDP implementation did not correctly check the length of received report messages. A paired HIDP device could use this to cause a buffer overflow, leading to denial of service (memory corruption or crash) or potentially remote code execution. CVE-2018-9516 It was discovered that the HID events interface in debugfs did not correctly limit the length of copies to user buffers. A local user with access to these files could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation. However, by default debugfs is only accessible by the root user. CVE-2018-10902 It was discovered that the rawmidi kernel driver does not protect against concurrent access which leads to a double-realloc (double free) flaw. A local attacker can take advantage of this issue for privilege escalation. CVE-2018-10938 Yves Younan from Cisco reported that the Cipso IPv4 module did not correctly check the length of IPv4 options. On custom kernels with CONFIG_NETLABEL enabled, a remote attacker could use this to cause a denial of service (hang). CVE-2018-13099 Wen Xu from SSLab at Gatech reported a use-after-free bug in the F2FS implementation. An attacker able to mount a crafted F2FS volume could use this to cause a denial of service (crash or memory corruption) or possibly for privilege escalation. CVE-2018-14609 Wen Xu from SSLab at Gatech reported a potential null pointer dereference in the F2FS implementation. An attacker able to mount a crafted F2FS volume could use this to cause a denial of service (crash). CVE-2018-14617 Wen Xu from SSLab at Gatech reported a potential null pointer dereference in the HFS+ implementation. An attacker able to mount a crafted HFS+ volume could use this to cause a denial of service (crash). CVE-2018-14633 Vincent Pelletier discovered a stack-based buffer overflow flaw in the chap_server_compute_md5() function in the iSCSI target code. An unauthenticated remote attacker can take advantage of this flaw to cause a denial of service or possibly to get a non-authorized access to data exported by an iSCSI target. CVE-2018-14678 M. Vefa Bicakci and Andy Lutomirski discovered a flaw in the kernel exit code used on amd64 systems running as Xen PV guests. A local user could use this to cause a denial of service (crash). CVE-2018-14734 A use-after-free bug was discovered in the InfiniBand communication manager. A local user could use this to cause a denial of service (crash or memory corruption) or possible for privilege escalation. CVE-2018-15572 Esmaiel Mohammadian Koruyeh, Khaled Khasawneh, Chengyu Song, and Nael Abu-Ghazaleh, from University of California, Riverside, reported a variant of Spectre variant 2, dubbed SpectreRSB. A local user may be able to use this to read sensitive information from processes owned by other users. CVE-2018-15594 Nadav Amit reported that some indirect function calls used in paravirtualised guests were vulnerable to Spectre variant 2. A local user may be able to use this to read sensitive information from the kernel. CVE-2018-16276 Jann Horn discovered that the yurex driver did not correctly limit the length of copies to user buffers. A local user with access to a yurex device node could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation. CVE-2018-16658 It was discovered that the cdrom driver does not correctly validate the parameter to the CDROM_DRIVE_STATUS ioctl. A user with access to a cdrom device could use this to read sensitive information from the kernel or to cause a denial of service (crash). CVE-2018-17182 Jann Horn discovered that the vmacache_flush_all function mishandles sequence number overflows. A local user can take advantage of this flaw to trigger a use-after-free, causing a denial of service (crash or memory corruption) or privilege escalation. For the stable distribution (stretch), these problems have been fixed in version 4.9.110-3+deb9u5. We recommend that you upgrade your linux packages. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAluyM0tfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0Sakg//d4zNTvlxh5pXEVJWbcKBmyHJ1LrMFb04BwhmCwzHO3WNLAswBNUDPDwC Q1V38ucCIlBsM88SfSgFsQkpSAot98HlKTJKlDnoIX01aRxZuEeiEPDRUcSIkl29 ZB9CBEjEoPyzf/GlUVM3cdaagKTxjUk46mL2ltxEhJkrYfGvoAim2IZuNvplx2vl ITsiFKtbsDucwx1pO18//6fG5xowNoAcUme8hYzt2TJkMYcnFpU+eSDiEZqfjUhr xb85RXJbn3zPJ6smC+Vi8ZfYihkTcv1gJgmjyJPYVPGsjCPFDPoa3FQJM0KzJMa7 yQSosJ4d4+2MCIHcPHhMnOD63HBz3Pm8wbd3EJWDlUDM5tWSXZBUyjTwqBkQTKaH 7oO1gpS+U7q18HeCJ27p1YOdfJFvX1PKMfyR2/fuulOUzF8WrkVEF76l5G8WEceC 9rI/83GhaIifXSwIRxeRo2sWYCqYSEQe9RSTRpvKCx4UWhInv9V2Jb5A9Mv20gvL NwwbgdmZ9z4vRSXeZqQ/NVCTEUh3Et6ppw3xTgyqAhEAzQXnEVEmdXNf5YuCy1Eo gz+IZJWWuJXzoq1IwO5y/2hdbr/wQWiBN7Yce3YNmJqcujZfvuf9Pfm6C9J4m7wY ZR/j+lbSbr2tHa1EZRKnmOk9DB3IIgiI3ERFKuYsHaT48YtHGJU= =O1JQ -----END PGP SIGNATURE-----